Excess Molar Enthalpies and Volumes of Diethylamine or Dipropylamine + an Ether at 298.15 K

Abstract

Excess molar enthalpies H m E and volumes V m E were measured as a function of mole fraction at 298.15 K and atmospheric pressure for each of the 12 binary mixtures: diethylamine or dipropylamine + di-1-methylethyl ether, 1,1-dimethylethyl methyl ether, 1,1-dimethylpropyl methyl ether, tetrahydrofuran, tetrahydropyran, and 1,4-dioxane. The results were compared to H m E and V m E for related mixtures and the specific interactions noted. The NRTL, UNIQUAC, and UNIQUAC ASM models of liquid mixtures were fitted to the results. The experimental results have been correlated and compared with the results from the extended real associated solution (ERAS) theory.

Thermodynamic and Acoustic Properties of Binary Mixtures of Ethers. 2. Diisopropyl Ether with Arylamines at (303.15, 313.15, and 323.15) K and Application of ERAS Model to Aniline Mixtures with Diisopropyl Ether and Oxolane

“…The reduction parameters for the mixtures P M * , T M * , and V M * are calculated from mixing rules. 26,65 Details are given elsewhere. 27,59 ERAS Parameters.…”

“…In addition, cross-association (A i B or A i B j ) in the mixture can also be accounted for. ERAS model has also been used to analyze the excess molar enthalpy H m E and excess molar volume V m E data of linear amine + ether systems. , To our knowledge, the applicability of the ERAS model to correlate thermodynamic properties of aniline mixtures with n -hexane, n -octane, methanol, ethanol, 1-propanol, and 1-butanol has been examined by Gonzalez et al Here we apply the ERAS model to correlate V m E of DIPE + aniline, oxolane + aniline (studied in earlier paper) mixtures at (303.15, 313.15, and 323.15) K, since, the ERAS parameters for aniline, DIPE, and oxolane are available. ,, For methyl aniline and ethyl aniline, ERAS parameters specially association constant and enthalpy of H-bond formation are not available.…”

“…All of the reduction parameters of pure components can be determined knowing the experimental data for molar volume V m , thermal expansion coefficient α, isothermal compressibility κ T , provided suitable association parameters, K i , Δ h i * , and Δ v i * are known. The reduction parameters for the mixtures P M * , T M * , and V M * are calculated from mixing rules. , Details are given elsewhere. , …”

Mixing Properties for Binary Liquid Mixtures of Methyl tert-Butyl Ether with Propylamine and Dipropylamine at Temperatures from (288.15 to 308.15) K

“…In earlier studies, we have reported the excess molar volumes, viscosities, and speeds of sound for binary liquid mixtures of alkoxyalkanols and polyethers with amines. − In a continuing effort, in this work, we report new experimental results on the density, ρ, and speeds of sound, u , for binary liquid mixtures of methyl tert -butyl ether (1) + propylamine (2) and + dipropylamine (2) at (288.15, 293.15, 298.15, 303.15, and 308.15) K over the whole composition range and atmospheric pressure. Investigations into literature have shown that excess properties of binary mixtures of amines with straight chain, branched chain, or cyclic ethers − and with alcohols , have previously been studied by various authors. The present study will therefore shed more light on the dissociation of hydrogen bond structure and formation of new N−H−O bonds and mixed species and their influence on the excess properties of the mixtures.…”

“…15, 293.15, 298.15, 303.15, and 308.15) K over the whole composition range and atmospheric pressure. Investigations into literature have shown that excess properties of binary mixtures of amines with straight chain, branched chain, or cyclic ethers [9][10][11] and with alcohols 12,13 have previously been studied by various authors. The present study will therefore shed more light on the dissociation of hydrogen bond structure and formation of new N-H-O bonds and mixed species and their influence on the excess properties of the mixtures.…”